wgripp

iTrader: (1)

I'm looking at felpro gasket sets for my 1991 L98. Felpro sells a conversion gasket set, which is supposed to include all gaskets for the bottom of the motor.

http://www.jegs.com/i/Fel-Pro/375/CS...YaAv2rEALw_wcB

This set includes a fuel pump gasket. (If you look at the picture, are the two gaskets on the rightmost side of the center of the image fuel pump gaskets?) Where do these go on the engine? Unless I'm confused, the fuel pump is in the fuel tank at the rear of the car. Furthermore, the fuel lines run to the fuel rails at the top of the engine. If I'm right, why are these gaskets included in this kit? Are they not used?

Are there any other gaskets on this kit that won't be used?

Also, what are the two smallest gaskets pictured? One is to the rightmost side of the second row of gaskets in the picture. The other is to the rightmost side of the last row.

sofakingdom

iTrader: (1)

The "correct" gasket set for your car fits about a billion other cars as well; some of which have a block-mounted fuel pump for a carb.

It's cheeeeeeeeper and eeeeeeeeeeezier for the gasket mfr to throw acoupla extra little parts in a set to make it more "universal" and thus fit a greater # of applications, than it is to stock multiple different sets and then fight over which one fits what cars.

If your block has the fuel pump provisions, which some (most) do even if they don't use it, you will need to reinstall the block-off plate, with the larger gasket. (or just RTV for that matter, that works fine for that) If you had a block-mount pump, you would use the plate for that, then the 2-hole gasket, then the pump.

Any gaskets that don't fit any part of your motor, just trash em. Not worth worrying about what they fit on some other motor.

wgripp

iTrader: (1)

Thanks for the explanation! I have no issues tossing unused gaskets, I just want to make sure I don't toss gaskets I need.

Where is the fuel pump block off plate?

Does anyone know which other gaskets I won't use?

sofakingdom

iTrader: (1)

Having seen the gasket, I think you'll be able to spot it easily enough.

When putting your car back together, don't forget to put a bolt in the circled hole. Otherwise your first post will be something about "engine spews oil down the bottom right side but only at high speeds".

wgripp

iTrader: (1)

My issue is that some mechanics (not me) pulled the engine out of my car to do some maintenance. Unless I say "put this gasket in this spot," I don't trust that ALL of the gaskets will be replaced.

Thanks for the photo of the bolt. If my motor was originally equipped with a bolt in that section, the mechanics wouldn't have removed it.

sofakingdom

iTrader: (1)

Well, you can see the fuel pump boss pretty clearly in that photo, right behind the circle, so... that should help.

That bolt started out life, in 1955, as a motor mount bolt. More recently it's been for the smog pump bracket. People often have trouble when they "clean up the engine bay" and "get rid of all the emissions crap", as well as of course when building one from scratch. If you look into the hole, you actually see the fuel pump push rod. (in cars that have a block-mount fuel pump) In some blocks, if the rod isn't there, you can even see the crank. It's no big surprise that it spews oil like a garden hose when the engine is spinning fast.

You won't need any of the ones across the bottom row unless one of them fits your water outlet, the 2 FP ones, or the little small one next to the WP ones. Unless one of them is a dipstick tube O-ring.

wgripp

iTrader: (1)

I see the place the fuel pump gasket goes now, thank you. Will the replacement gasket hold in fuel or oil? Or is it just there to stop a block-off plate from rattling?

Regarding the smog pump bolt hole that holds in oil (the one you circled in green), is there an o-ring or a gasket that's supposed to go under the bolt to keep the oil in?
When you say "the little small one next to the WP", is that the one you circled in green on the picture, meaning a seal should go there? If so, will i need to remove the smog pump to replace it?

You said, "
You won't need any of the ones across the bottom row unless one of them fits your water outlet, the 2 FP ones, or the little small one next to the WP ones. Unless one of them is a dipstick tube O-ring."

I'm assuming FP = fuel pressure. I already had all the vitton o-rings in my fuel rails replaced. So, am I good there? Also, where does the dip stick o-ring go? Is that a seal on the dipstick itself, directly below the handle? I think I already have all of the cooling system gaskets. (By water outlet, do you mean the seal above the thermostat?) I don't think any of the seals are that small.

I really appreciate your help!

sofakingdom

iTrader: (1)

There's oil behind the fuel pump plate, no fuel. (assuming of course that the fuel pump that your car doesn't have, hasn't gone bad...) The plate doesn't ever rattle, it has 2 bolts on the bottom that hold it to the block, then 2 more larger ones that go through the pump and hold both the pump and the plate on. Your situation, since it doesn't have a pump, would be just a flat plate w 4 holes, and 4 short bolts to hold it.

That bolt is just a bolt... put a blob of sealer on the threads before you put it in.

"Little small one next to the WP ones" refers to the photo of the gasket set. It occurs to me, another possibility is, that one might be for the oil drain plug.

FP = fuel pump

Dipstick tube O-ring goes on the dipstick tube down at the bottom where it plugs into the block. Some tubes have it, some don't.

Yes, water outlet = the cast thing that goes on over the thermostat. Some of those use a sort of O-ring like seal but I think all of the intakes that came in our cars use just yerbasic flat paper type of gasket.

NoEmissions84TA

iTrader: (1)

Even if you are not using a block mounted FP, only use a 3/8-16 bolt here that is only 1/2" long. Use sealer on the threads.